Hard disk system and method for accessing the same

Abstract

A hard disk system and a method for accessing the hard disk system are provided. The hard disk system includes a first hard disk and a second hard disk. The first hard disk is used to store system data that is read-only. The second hard disk includes a mapped data storage section and a variable data storage section, wherein the mapped data storage section is used to store a mapped data generated by mapping the system data of the first hard disk. A maximum number of writes for the first hard disk is less than a maximum number of writes for the second hard disk, wherein the hard disk system performs data modification via the variable data section of the second hard disk.

1 . A hard disk system, comprising:
 a first hard disk used to store system data, wherein the system data is read-only;   a second hard disk including a mapped data storage section and a variable data storage section, wherein the mapped data storage section is used to store mapped data generated by mapping the system data of the first hard disk;   wherein a maximum number of writes for the first hard disk is less than that for the second hard disk, and the hard disk system performs data modification via the variable data section of the second hard disk.   
     
     
         2 . The hard disk system as claimed in  claim 1 , wherein the first hard disk is a solid state hard disk. 
     
     
         3 . The hard disk system as claimed in  claim 1 , wherein the first hard disk is a solid state RAID (redundant array of independent disks). 
     
     
         4 . The hard disk system as claimed in  claim 1 , wherein the second hard disk is a liquid bearing hard disk. 
     
     
         5 . The hard disk system as claimed in  claim 1 , wherein the second hard disk is a RAID of liquid bearing hard disks. 
     
     
         6 . The hard disk system as claimed in  claim 1 , wherein the system data comprising data of a kernel operation system. 
     
     
         7 . The hard disk system as claimed in  claim 1 , wherein the first hard disk has a faster reading speed than the second hard disk. 
     
     
         8 . A method for accessing a hard disk system, wherein the hard disk system comprises a first hard disk and a second hard disk, and a maximum number of writes for the first hard disk is less than that for the second hard disk, the method comprising:
 mapping system data of the first hard disk onto a mapped data storage section of the second hard disk;   reading out the system data of the first hard disk; and   performing data modification on a variable data storage section of the second hard disk.   
     
     
         9 . The method as claimed in  claim 8 , wherein the first hard disk is a solid state hard disk or a solid state RAID, and the second hard disk is a liquid bearing hard disk or a RAID of liquid bearing hard disks. 
     
     
         10 . The method as claimed in  claim 8 , wherein the first hard disk has a faster reading speed than the second hard disk.